变形量和变形后保温时间对Q235钢形变诱导铁素体逆相变的影响
Effect of Deformation and Holding Time after Deformation on Inverse Transformation of Deformation Induced Ferrite in Q235 Steel
摘 要
通过对Q235钢在Gleeble1500热模拟试验机上压缩变形后保温不同时间的显微组织进行观察,研究了变形量和变形后保温时间对形变诱导铁素体向奥氏体逆相变的影响.结果表明:在相同温度和相同变形速率下,随着变形量的增加,发生形变诱导铁素体逆相变的时间逐渐变短;同时随着保温时间的延长,铁素体的含量出现由多到少、再到多的变化趋势,而且铁素体出现了两种不同原因导致的晶粒长大.
逆相变
Q235钢
deformation induced ferrite
inverse transformation
Q235 steel
Abstract
The influence of deformation and holding time on the inverse transformation phenomenon of deformation induced ferrite in Q235 steel was investigated by observation of microstructure of the specimen which experienced a hot compression process on Gleeble1500 thermomechanical simulator.The results indicated that the speed for inverse transformation of deformation induced ferrite increased with the increase of strain at the same temperature and strain rate.The ferrite content decreased first and then increased with the increase of holding time.Two different causes resulted in the ferrite grain growth.
中图分类号 TG142.3
所属栏目 试验研究
基金项目 国家高技术研究发展规划资助项目(2007AA03Z518)
收稿日期 2008/2/29
修改稿日期 2008/9/25
网络出版日期
作者单位点击查看
备注王倩(1979-),女,辽宁锦州人,博士研究生.
引用该论文: WANG Qian,YANG Zhong-min,WU Chun-jing. Effect of Deformation and Holding Time after Deformation on Inverse Transformation of Deformation Induced Ferrite in Q235 Steel[J]. Materials for mechancial engineering, 2009, 33(2): 12～15
王倩,杨忠民,吴春京. 变形量和变形后保温时间对Q235钢形变诱导铁素体逆相变的影响[J]. 机械工程材料, 2009, 33(2): 12～15
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参考文献
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【5】裴新华,吴申庆,胡恒法,等.低碳钢临界奥氏体区的变形行为[J].机械工程材料,2006,30(4):26-29.
【6】刘朝霞,佟铭明,黄成江,等.低碳钢形变诱导铁素体相变过程中碳的扩散行为[J].金属学报,2004,40(9):930-934.
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